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RE 66170-B/2019-05-15, Control block SB24/34, Bosch Rexroth AG
Shuttle valve :
Discharges the higher LS pressure from the block-internal channel
Y
and
to port
.
Shuttle valve with spring pretension :
Discharges the higher LS pressure from the
block-internal channel Y and
to port
. The spring pretension prevents pressure
build-up in
if port
is not occupied.
Pressure relief valve :
Limits the pressure at port
and indirectly also the
pressure in the block-internal
P
line.
NOTICE!
The pressure relief valve with its short response time and low flow is
applied for limitation of the pressure peaks in the supplied flow.
Pressure reducing valve :
Limits the pressure in the block-internal EHS pilot oil
line
X
and supplies this line with the flow from the block-internal line
P
.
Pressure reducing valve switchable solenoid :
Electrical activation and
deactivation of the pressure reduction function.
Rx-R non-return valve:
Protects EHS pilot oil return line
Rx
against pressure peaks
from block-internal return flow
R
.
The central connecting plate without switchable solenoid (pressure reducing valve)
is not equipped with manual operating elements or external control functions.
The version with switchable solenoid (pressure reducing valve), the pressure
reduction function can be activated by energizing the switchable solenoid.
This way, the pressure in the block-internal EHS pilot oil line
X
is increased to the
pressure value of the pressure reduction function.
If the switchable solenoid is not energized, the block-internal EHS pilot oil line
X
is
relieved to the return flow.
Internal function
Operation / control
